Nationals Roster & Staff
Transactions
| Date | Transaction |
| 07/30/22 | Washington Nationals placed RHP Erick Fedde on the 15-day injured list retroactive to July 27, 2022. Right shoulder inflammation. |
| 07/30/22 | Washington Nationals recalled RHP Cory Abbott from Rochester Red Wings. |
| 07/29/22 | Washington Nationals signed free agent RHP Wilfry Pena to a minor league contract. |
| 07/28/22 | Washington Nationals sent RHP Reed Garrett on a rehab assignment to Rochester Red Wings. |
| 07/28/22 | Washington Nationals sent RHP Reed Garrett on a rehab assignment to Rochester Red Wings. |
| 07/27/22 | Washington Nationals sent RHP Will Harris on a rehab assignment to Rochester Red Wings. |
| 07/27/22 | Washington Nationals sent RHP Will Harris on a rehab assignment to Rochester Red Wings. |
| 07/25/22 | 2B John McHenry roster status changed by Washington Nationals. |
| 07/25/22 | Washington Nationals signed free agent 2B John McHenry. |
| 07/25/22 | Washington Nationals signed free agent 3B Zion Pettigrew to a minor league contract. |
| 07/23/22 | Washington Nationals activated LHP Josh Rogers from the 15-day injured list. |
| 07/23/22 | Washington Nationals optioned LHP Josh Rogers to Rochester Red Wings. |
| 07/22/22 | Washington Nationals sent RHP Reed Garrett on a rehab assignment to Fredericksburg Nationals. |
| 07/22/22 | Washington Nationals sent RHP Reed Garrett on a rehab assignment to Fredericksburg Nationals. |
| 07/22/22 | Washington Nationals activated RHP Victor Arano from the 15-day injured list. |
| 07/22/22 | Washington Nationals signed free agent LF David Dahl to a minor league contract. |
| 07/22/22 | Washington Nationals sent RHP Will Harris on a rehab assignment to Fredericksburg Nationals. |
| 07/22/22 | Washington Nationals placed RHP Tyler Clippard on the 15-day injured list retroactive to July 19, 2022. Groin strain. |
| 07/22/22 | Washington Nationals signed free agent RHP Daniel Ponce de Leon to a minor league contract. |
| 07/22/22 | Washington Nationals recalled RHP Hunter Harvey, and from Rochester Red Wings. |
| 07/21/22 | 3B Trey Lipscomb roster status changed by Washington Nationals. |
| 07/21/22 | Washington Nationals signed 3B Trey Lipscomb. |
| 07/21/22 | Washington Nationals signed 3B Murphy Stehly. |
| 07/21/22 | Washington Nationals signed C Maxwell Romero Jr.. |
| 07/18/22 | Washington Nationals signed free agent 2B Dee Strange-Gordon to a minor league contract. |
| 07/18/22 | Washington Nationals optioned RHP Cory Abbott to Rochester Red Wings. |
| 07/17/22 | Washington Nationals sent LHP Josh Rogers on a rehab assignment to Rochester Red Wings. |
| 07/17/22 | Washington Nationals optioned RHP Hunter Harvey to Rochester Red Wings. |
| 07/17/22 | Washington Nationals recalled RHP Cory Abbott from Rochester Red Wings. |
| 07/16/22 | Washington Nationals traded CF Matt Lipka to Milwaukee Brewers. |
| 07/14/22 | Washington Nationals activated RHP Anibal Sanchez from the 60-day injured list. |
| 07/14/22 | Washington Nationals sent RHP Victor Arano on a rehab assignment to Rochester Red Wings. |
| 07/14/22 | Washington Nationals activated RHP Anibal Sanchez. |
| 07/14/22 | Washington Nationals transferred RHP Stephen Strasburg from the 15-day injured list to the 60-day injured list. Stress reaction of the ribs. |
| 07/14/22 | Washington Nationals optioned RHP Cory Abbott to Rochester Red Wings. |
| 07/14/22 | Washington Nationals optioned RHP Mason Thompson to Rochester Red Wings. |
| 07/13/22 | Washington Nationals placed RHP Tanner Rainey on the 60-day injured list. Right UCL sprain. |
| 07/13/22 | Washington Nationals selected the contract of RHP Tyler Clippard from Rochester Red Wings. |
| 07/13/22 | Washington Nationals recalled RHP Cory Abbott from Rochester Red Wings. |
| 07/10/22 | Washington Nationals activated RHP Hunter Harvey. |
| 07/10/22 | Washington Nationals transferred RHP Jackson Tetreault from the 15-day injured list to the 60-day injured list. Right scapula stress fracture. |
| 07/10/22 | Washington Nationals optioned RHP Joan Adon to Rochester Red Wings. |
| 07/08/22 | Washington Nationals sent RHP Victor Arano on a rehab assignment to FCL Nationals. |
| 07/07/22 | Washington Nationals recalled RHP Joan Adon from Rochester Red Wings. |
| 07/06/22 | Washington Nationals sent LHP Josh Rogers on a rehab assignment to Harrisburg Senators. |
| 07/06/22 | Washington Nationals sent RHP Hunter Harvey on a rehab assignment to Rochester Red Wings. |
| 07/06/22 | Washington Nationals sent RHP Hunter Harvey on a rehab assignment to Rochester Red Wings. |
| 07/05/22 | Philadelphia Phillies claimed LHP Sam Clay off waivers from Washington Nationals. |
| 07/04/22 | Washington Nationals placed RHP Jackson Tetreault on the 15-day injured list retroactive to July 3, 2022. Right scapula stress fracture. |
| 07/04/22 | Washington Nationals recalled RHP Jordan Weems from Rochester Red Wings. |
| 07/01/22 | Washington Nationals designated LHP Sam Clay for assignment. |
| 07/01/22 | Washington Nationals activated RHP Mason Thompson. |
| 07/01/22 | Washington Nationals recalled C Tres Barrera from Rochester Red Wings. |
| 07/01/22 | Washington Nationals optioned C Riley Adams to Rochester Red Wings. |